Paper-bag machine.



No. 634402. Patented oet. 3;'1399.

n. Y naamw. PAPER BAG #MII-HNE.

(Application led July 22, 1898.)

{No ladet) I5 Sheets-Shget l.'

*FII-1:.

N0.'634,|02 v Patented Oct. 3, |899.

-H. BILGRAM.

PAPER BAE MACHINE.

QApplcaton Bled July 22, 1898.;

l5 Sheets-Sheet 2 v(nu Model.)

' /lvvE/YTO:

M70 raw..

TH: mmm. Jens ca. momu'mo.. wasmuowu. nv c No. 634,!02. Patented Unt. 3,|899. H. BILGRAM.

PAPER BAG HACHNE.

(Application led July 22, 1898.; v A (lo Nudel.) I5 Sheets-Sheet 3.

ahw

Patented 0ct...3, |899.

H. lLrxmm.4

PAPER BAG MACHINE.

(Applimion fuga .my 22,1898.;

I5 Sheets-Sheet 4.

(No Model.)

No. 634,|D2 Patented Oct. 3, |899. y

- H. BILGRAM.

PAPER BAG MACHINE.

(Appiimtiou med .my 22, 189s.) Ulu Modal.) I5 Sheets-#Sheet vel.

MSN

ro-u; cams films ou. pHoro-umn.. wAsmNGTm, Dv c.

No. 634,102. Patented oct. s, |899. H. BILGBAM.

PAPER BAG MACHINE. Y

(Application lcfd July 22, 1898. (No ModeL) l5 SAheets-Sheet 6,

l/YVEIYTDI?! I Ma TM THE Nams Ferias co., Pnoraugwo.. wAsnmnruu, n, n.

No. 634|02. Patented Oct. 3, i899. H. BlLGRAM. PAPER BAG MACHINE.

(Application ed July 22, 189B.) (Ha Model.) I5 Sheets-Sheet 7.

9u 00000000 n ..-n .I1 5|. 3%@ Nb NRS .E oooooo 0UQ nooo oo I, SMQ wwwwoowoooo 6&5 S o O 'me Noms Firms co. man'. umm wAsmNsToN, n. c.

0000 %N\ 0G 0000 mi 0000000 ll. U

oooo Q 0000 o0 oooo 0a SUIS o o Nt. s@ .www I oo 0 v -..d 8x90 .wb .b oo ob o Y s cm 9. 9 mm, .L c D d e t n nu t a DI M A Dn G L B H. Z m 4s..3 6 0. N

PAPER BAG mcnms.

v(Application. led July 22, 18980' y(Nu'llodel I5 Shasta-Sheet 8,

rn: nnnm's versus co. Hmmm wsummvu, uA c.

No. A634,102. Patented uct. 3, i899.

H. BILGRAM.

PAPER BAGV MACHINE.

- y (Application Bled, July 22, 189B.)

(llo Modal.) l5 Sheets-Sheet 9.v

THE scams PETERS DGJPHGTD-Urlm WASI-HAMON, D. c.

WITNESSES No. 634,102.. Patented om. s, |899.

l n. BILGRAM.

PAPER BAG MACHINE.

[Application filed. July 22, 1898.) (No Modal.) l I5 Shets-Shet IU FIC?-j 110. -s34,|o2. Pmnted het. '3, |899.

n. BILGRAM.

PAPER BAG MACHINE.

(Application Med July 22, 18984 W//f/M /N rely 7'0 g.'

No. 634,102. Y Patented Uct. 3,1899. H. BILGRAM.

vPAPER BAG MACHINE.

(Application ed July 22, 1898.)

l5 sham-shea 12.

(N0 Model.)

FIG-j Y h/l INVENTOR" No. 634,102. 1 Patented uct. 3, 1899.,

H. B'LGRAM. PAPER BAG MACHINE.

(Appns vn med July 22 189e (lo Rudolf) l5 Sheets-Sheef I3.

M M y up. 6'34,|o2. Y Patented oct. 3, |899.

n. BILGRAM.

PAPER BAG MACHINE.

(Application filed July 22, 189B.)

um umm ls shwrs-snee: |4.

.FIG 30.

me Hemels Psrgics nu. Pnmuumo. WASHINGTON, n u.

' Patent@ out, s; lass.

45.53.4402. l n. BILGRAM.

PAPER BAGIACHHIE.'

(Appucaeimi med July 22, 1898A),

l5 Sheets-Sheet I5,

(lo llodelf) nv THE-S' SES;

a? sa# j n UNITED 'STATES PATENT Ormes..

HUGO suenan, or 'PHILADELPHImPENNsYLvANIA,-Ass1enon, nv MnsNnASSIGNMENTS, TO THE EASTERN` PAPER BAG COMPANY, OF HARTFORD,CONNECTICUT.

PAPER-BAG MACHINE.

SPEIFICAATION forming part-of Letters Patent No. 634,102, dated October3, 1899.

` Application filed July 22, 1898. Serial No. 6 86.590. (No model.)

To all whom it mag/conceive: y `signed particularly for enabling aSatchel- Be it'known that I, HUGO'BILGRML of the square bottom to beformed on a bellows sidecityand county of Philadelphia, State of Penn--fold tube by the action of suction with great Sylvania, have invented anImprovement in rapidity and precision. This part of my in- 55 5Paper-BagMachines, of which the following vention also includesimprovements in the is a specification. means for applying the suctionto the suc- Myinvention relates to paper-'bag mation-formers by whichthe bottom is folded,. chines; and itconsists of certain improvewhereby.the use of external suction-tubes ments which are fully Set forth in thefollowleading to the suction-'formels is avoided. 6o 1o ingspecification and are shown in the accom- My invention also relates tothe devices for panying drawings. clamping the tube-sections while theirends I have shown my kimprovements embodied are being folded by thebottom-formers and in an organized machine adapted for formingautomatically releasing them after the bota completely folded and pastedbag from a tom folds are `formed, and these improve- 65 r 5 continuonsroll of paper, and my improve- .ments are designed to attain greatersimments are especially adapted to the formaplicityof construction andcertainty of action. tion of a Satchel-square bottom upon a bel- Anotherpart of my invention relates to the lows side-fold tube. final-foldingand pasting devices and is des A part of my improvements relates to thesigned to enable the final folds, which are 7o zo tube-forming devicesby Vwhich the paper is formed in the paper tube after it is deliveredformed into a pasted ytube .and is designed from thev bottom-formels, tobe made with particularly to equalize the tension upon the greateraccuracy and speed. paper throughout the tube-forming devices Anotherpart of my invention relates to while the tube is being formed, wherebyprinting devices for printing an impression 75 z 5 wrinklingandtearingof the paper are avoided upon the paper bags during their processof and a perfect continuous tube may be formed construction-a g., forindicating the capacat a very high speed.Y ity thereof-and this part ofmy invention is Another part of my invention relates tothe designedespecially for controlling the operslitting devices used in machines ofthis charation of such printing vdevices to suit the 8: 3o acter formaking slits in the paper tube at speed of movementof the paper andfortiming n intervals to form tabs upon vthe ends of the their operationso that the impressions may tube-sections, and this part of my inventionbe made at the proper intervals. is designed especially for controllingthe op- My invention also embraces improvements eration of suchslitters, whereby their speed in the stripping devices for removing thepar- 8 5 3 5 may beregulated to suitthe speed with which tially-forrnedtube-section from the bottomthe paper is moving, whether vit be fasteror vformingdevicem wherebya more positive and slower, and their time ofoperation may be certain action oi' the gripper of the strippingsuitablyregulated to insure the -slits being cylinder is obtained. y l made atthe proper intervals apart. c I shall now refer to the accompanyingdraw- 9o 4o Another part of myinvention relates to the ings, inwhichcutting devices; and it consists particularly Figure l is a sideelevation of a paper-bag in certain improvements in the swingingcutmachine embodying my invention. Figs. 2 ter-bar or striker and in themeans for operand 2 show a plan view rof the same on a ating it.,whereby the lineof movement of the larger scale than Fig. 1. Figs. 3 and3 show 9 5 45 bar or striker. is eo'nned Whollywithin the a longitudinalvertical sectional view of the body of the machine. same on the line ofFigs. 2 and 2 Fig. 3*

,Another part of my invention relates to the is a sectional viewsimilarto Fig. 3 of a party bottom-formels by which the end Ot' the vpaof themechanism, showing the tucker-plate per tube is formed into the properfolds bein a different position. Fig. 4 is atransverse roo 5o forepassing`to the final-folding and pasting vertical-sectional view on theline y y of Fig. devices, and this part of my invention is del, lookingto the right.` Fig. 5-isa plan view,

enlarged, of the tube-section carrier and bottom-former. Fig. Gisa`front view ofthe Same with the snction-formers opened. Fig. 7 is atransverse sectional view of one of the formers on the line .e e' ofFig. 6.. Fig. 8 is a side elevation of the tube-section carrier andbottom-former. Fig. 9 is a longitudinal vertical sectional view of thesame on the line w w of Fig. 5. Fig. 10 is a front elevation, enlarged,of part of the final-folding devices. Fig. 11 is a vertical sectionalview of the same on the line v QJ of Fig. 10. Fig. 12 is a detail planview of a part of the devices for operating the folding-plates. Fig. 13is a cross-sectional view of the same on the line it u of Fig. 12. Fig.14 is a plan view, enlarged, of the stationary guide-plate and themovable base of the reciprocating carrier. Fig. 15 is a transversevertical sectional View of the same on the line t t of Fig. 14. Fig. 16is a sectional diagram of the final-folding and pasting cylinders. Fig.17, Sheet 5, is a plan view, enlarged, of the printing devices.gitudinal sectional views of the suction-formers, showing differentpositions assumed by the sections in the formation of the bag-bottoms.Figs.v 20 and 21 are transverse sectional views of the tube-formingdevices, respectively, on the lines r r and s 5 of Fig. 2*.

Figs. 22, 23, 24, 25, 26, 27, and 2S are perspective views of thetube-section, illustrating the different steps in the formation of thebagbottom. Fig. 29, Sheet 7, is a horizontal sectional view of a part ofthe bottom-formels, showing the air passage-way therein. Figs. 30, 31,32, 33, 34, and 35 are perspective views of detached portions of thebottom-formels. Fig. 36 is an end view, enlarged, of thestripping-cylinder; and Fig. 37 is a longitudinal sectional View of partof the same on the line p p of Fig. 36.

The body ofthe machine is composed of suitable side frames 1 1, by whichthe various operative parts are carried. The final-folding and pastingdevices are carried in brackets 2 2 at the front of the machine.

Poweris distributed to the various operative V parts of the machinethrough suitable gearing and power-transmitting connections from apower-shaft 3, journaled in the frames 1 1.

The paper in a continuous web is taken from the roll 4, mounted in therear of the machine, and is carried forward about suitable guides,pasted longitudinally, and folded into a bellows side-fold tube. lt isthen cut into sections, which are taken by the reciprocating carrier,and the bottom folds are formed by the movable suction-formels thereof.Thesetube-sections, with the bottoms thus partially formed, are thendelivered to the iinal-foldingand pasting devices,by which thenal-folding and pasting operations are performed, and the finished bagsare discharged from the machine.

The ubc-forming devices, (see Figs. 1, 2, 3, 20, and 21.)-The roll ofpaper 4 is carried on a shaft 5, supported in brackets 6 in Figs. 13 and19 are louthe rear of the machine. lt passes thence in a continuous webover a guide 7, extending transversely between the frames 1 1,and upon aguide Sinv the rear of the machine, adjacent to which is located thepaste-wheel 9, by which paste is applied in the usual manner to one ofthe edges of the web as the paper passes over the guide 8. From theguide 8 the paper passes under the forming-'plate 10, which is carriedby a frame 11, supported by a pendant 12 from a bracket 12b, carried byone of the side frames 1, and forms an upwardly-inclined extension fromthe rear of the base-plate 14. This plate or extension 10 hasoutwardly-inclined edges 13 13, by which the sides of the web are bentupwardly in commencing the formation of the tube. (See Fig. 20.) Thelower face of the frame 11 carries a base-plate 14, inclining upwardlyfrom the base of the plate or extension 10and forming therewith an angle15. Under this plate 14 and its extension 10 the paper of the web passeswhile its edges are being folded down and the bellows folds are beingformed in the sides.

16 is the top plate, carried by the frame 11 and extending forwardbetween the feedingrolls 25 26, one of which is suitably reduced, as at25, to admit it.

17 is a folding-finger carried bythe arm 12 and extending forward withan inwardly-inclined edge over the plate 16 from the end thereof on oneside.

18 is a t'olding-inger carried by the arm 12W on the opposite side andextending rearwardly, with an inclined edge over the plate 16 from theend thereof.

19 19 are fingers (shown as extensions of ther fingers 17.18) projectingrearwardly beyond the end of the plate 16 and inclining outwardly.

2O is a finger carried by the plate 16 and projecting from its oppositeside over the linger 17.

21 21 are plates carried by the bracket 12 or pendant 12"L and extendingforward longitudinally one on each side under the plate 16 with theiredges inclining forwardly from the rear. A

22\are guides, one on each side, depending from the lingers 17 and 18and located at the sides between the plates 14 and 16 and adjacent tothe `extension 10.

As the web of paper passes under the plate 10 its two sides are bent upby the inclined edges 13 13 thereof, the downward inclination of theplate, together with the inward inclination of the edges 13 13, actingto turn up the side edges. This action is also assisted by the fingers10 19, which act upon the outside of the paper and serve to hold it incontact with the edges 13 13 of the plate 10. The outward inclination ofthese edges 13 13 acts to gradually narrow the lower ply of the paperuntil it reaches the base-plate 14, where its upturnedsides pass underthe guides 22 22 and the side edges at the top pass under the FOO IIO

iingers 17 and 18. (See Fig. 21.) By these means an even tension isobtained upon the paper throughout and the liability ofv the paper towrinkle or to be torn is avoided. The sides -of the paper are acted uponby the plates 21 21, and being wide at the rear where they pass theangle 15 are gradually creased inwardly to form the bellows side folds.The linger 17 folds the edge upon which it acts down upon the plate 16,while the nger 2O acts upon the opposite pasted edge and folds it over.The bellows-tube thus formed envelops the plate 16, and as it travelsforward to the rolls 25 26 its upper face is acted upon by the rolle rs23 23, which serve to draw the paper tightly about the upper plate. Therollers 23 23 .are shown set atan angle and carried by a weighted lever24:, supported by a pedestal 27. Y

The fingers 19 19 may be omitted or used on one side only, and while thefingers 22 2 are desirable in assisting in flattening down the sides andguiding the paper they may be omitted without materially attecting the"operation of the tube-former.

37 is a plate arranged over the forward end of the plate 16 immediatelyin the rear of the rolls 25 26, between which and the plate 16 the upperply of the paper tube passes. This plate serves to keep the paper fiatand to prevent creasing'and also to press the pasted edges together.This plate is shown provided with side anges 3S, extending downward oneach side of the plate 16 and held against forward movement bythe rod39. In the construction shown the pedestal 27 for the pressure-rolllever 24 is carried by this plate 37, and the plate is provided withslots 40 40 to admit the slitters 2S. l

41 is a pressure-plate located below the plate 14, between which and theplate 14 the lower ply of the paper tube passes. This plate is shownhinged to the end of a lever 12, carried on the rod 39, and an arm 43,carried thereby and connected by a spring le with a stationary portionof the machine, holds the plate 4l in contact with the lower ply of thepaper tube as it passes over the `plate 14. The plate 41 acts to holdthe paper tube flat and to prevent creasing.

The Sluiter-s' cmd meansfor controlling them, (Figs. 2a and 3a.)-28 arethe slitters for cutting the short longitudinal slits in the paper tubeto form the tabs on the ends of the tubesections when the tube issevered. As these slitters must operate to make the slits exactly at thelines upon which the tube is severed into bag-lengths, it is desirablethat their time of action should be varied with any paper.

To control the intervals of the action of the 'length of thebag-sections to be formed.

The slitters 28 are carried on a shaft 29,

journaled behind the Trolls 25 26 in suitable bearings on the sideframes 1 1 and ldriven through a gear-wheel- 30, carried thereby, whichengages a gear-wheel 31, loose on a counter-shaft 32 and controlled bythe tubefeeding or drawingin devices, receiving power from thegear-wheel 212 on the shaft of the lower drawing-in roller 26' throughanv intermediate gear 211. l

The devices shown for interrupting the action of the slitters 2S are asfollows: The gear-wheel 30 is connected with the shaft 29 or with thesleeve 33 thereon, which carries the slitters, by a yielding connectionthrough a spring 3ft, and a ringer 35, carried by the shaft, is actedupon by a segment 36 on the counter-shaft 32, which during the intervalof its contact with the finger 35 prevents the rotation of the shaft 30and -slitters 28, putting the spring 34 u'nder tension, which theinstant the segment 36 releases the finger 35 restores the drivingconnection between the shaft 29 and slitters 2S. The gear-wheel 30continues the rotation of the shaft 29 until its'movement is againarrested by the action of the segment on the fingerV 35.

To regulate the actionfof the segment 36 to govern the operation ot4 theslitters 2S 2S and release them at the proper moment with relation tothe movement of the paper, it may be adjusted circumferentially on theshaft 32.

When the speed of the drawing-in rollers 25 26 is accelerated orretarded to increase or decrease the speed of movement of the gear 30,the slitters 28 will be correspondingly increased or decreased throughthe gearing 212, 211, and 31, and time of rest or interval ofinterruption will be correspondingly increased or diminished.

T he tube feeding and cutting devices, (Figs.

2, 2, 3, and 4.)-25 26 are the drawing'in rollers, between which thepaper tube passes and by which it is fed to the cutters, by which it-iscut into bag-sections. The plate 16 passes between the rollers 25 26 andis formed at this point with a narrowr section 16, so that the rollersmay act directly upon the sides of the paper. These rollers 25 26 arethefeedrollers by which the paper is drawn from the roll et and carried'through the tube-former. They are journaled in suitable bearings on theside frames l l, and the upper roller 25 is shown journaled ineccentrics, by which it may be raised out of contact with the lowerroller 26, thus stopping the feeding of the IOO IIO

paper. The roller 25 is geared with the shaft 47 of the roller 2C bygears 4S 49 and is driven therefrom.

The outer end of the plate 1G beyond the rollers 25 26 is provided withthe usual serrated edge 59, and a second stationary cutter 70, carriedby a bar 71, is located immediately above it. The bar 71 is shownpivoted to a bracket on the frame, as at 72, and its free end engages anotch 73 on the opposite side and is locked in place by a pivoted dog74, Fig. 4.

is a rocking reciprocating cutter-bar which in its cutting action isprojected across the path of the paper tube and rocked past thestationary cutters and on its return movement is retracted and rockedback out of the path of the paper. The rocking movements are obtained bya crank operatively connected with the rear end of the bar, and thereciprooations are imparted by a rocking slide on which the bar moveslongitudinally when rocked. In the particular construction shown thecutter-bar 45 is pivoted or otherwise operatively connected at its rearend with a crank 75 of a shaft 7G, journaled in a bracket 77, carried bythe side frame 1, and its rear portion is provided with a longitudinalslot 78, which receives a slide 79, pivoted on a stud 80 on the bracket77. As the crank 75 turns the cutter-bar is rocked and at the same timeis reciprocated on the slide 79. Considering the bar in the positionshown in Fig. 4, the forward movement of the crank reciprocates the barforward on the slide 79 until its end extends below the stationarycutters 59 70. In this position the slide 79 is at the rear end of theslot 78, and the downward movement of the crank 75 rocks the bar on thestud SO as a fulcrum, causing it to ascend with a quick movement acrossthe face of the cutters 59 70 and sever the paper tube. The continuedforward and upward movement of the crank 75 reti-acts the bar 45 on theslide 79 until its end is moved beyond the line of the cutters, and thefurther upward and forward movement of the crank then rocks the bardownward on the stud 8O as a fulcrum until it again reaches the positionshown in.

Fig. 4. By these means the movements of the bar 45 are confined withinthe planes bounding the sides of the machine, and the swinging of thebar in an arc outside of the machine, which requires lateral space andis dangerous, is avoided. The crank-shaft 76 may be operated from acounter-shaft S1 by worm-gears 250 251, carried by thecrankshaft andcounter-shaft, respectively.

82 83 are feeding-rollers carried on shafts 84 S5, respectively, andlocated in front of the cutters, which receive the cut bag lengths andfeed them forward to the bottom-form ers. The shafts of thesefeed-rollers are geared together by gears 86 S7.

88 is a guide-plate extending from the rear of the feed-rollers 82 83and between them forward to the point of delivery to the clampframe ofthe carrier. The peripheries of the' feed-rolls are suitably recessed topermit the passage of the guide-plate between them. The tube-sections,cut off by the action of the bar 45, are fed forward by the 'rollers 82S3 over the plate S8, the rear end of which, 89, may be bent downward toguide the forward ends of the paper tubes and prevent them from catchingthereon.

S9 89 are feed-rolls located near the front endv of the guide-plate 8Sand running in contact with lower feed-rolls 90 90 to receive thetube-sections from the feed-rolls S2 S3 and deliver them to theclamp-frame of the bottom-formers. Thefeedaolls 89 are shown above theplate S8 and the rolls 90 below it, the plate being provided with slots91,through which the rolls make contact. of the sets of feed-rolls S9and 90 maybe provided with facing of more or less adhesive material,such as rubber. In the drawings the upper feed-rolls S9 are shownprovided with rubber peripheries 92.

The shaft 93 of the lower rolls 90 is shown driven by a gear-wheel 94,and the shaft of the upper rolls 89 is shown driven therefrom by gears252.

The bottom-formera, (Figs. 1, 2, 3, 5, (i, 7, S, 9, 14, 15, 1S, 19, and30 to 35.)-This portion of my invention relates to improvements upon thebottom-forming devices for forming satchel-square bottoms upon bellowsside-fold tubes, described in Letters Patent to Villiam B. Purvis, Nos.519,348 and 519,349, dated May 8, 1894; No. 530,650, dated December 11,1894, and No. 578,361, dated March 9,1897. In those patents aredescribed bottom-forming` devices employing a reciprocating carriageVcarrying suction-formels composed of hollow sections, which duringtheir reciprocations a're moved apart and changed in the angularrelations of their sections to break down the end of the paper tube intothe desired folds. In connection therewith side-folding lingers areused, adapted at certain intervals to move over the perforated faces ofthe suction-formers to assist the suction thereof in properly shapingthe bellows side folds. As shown in those patents, the suction iscreated in the hollow sections of the formers through flexible tubesconnected with them. The tubesections are fed to the carriage and areclamped thereby, with the ends projecting between the suction-formers,while the bottoms are being folded and are then released and strippedoff.

A portion of my improvements relates to the employment of a clampingdevice on the carriage controlled by a frietional resistance produced bythe movement of the carriage to close the clamp during the forwardreciprocation of the carriage while the bottom is being formed and toautomatically open or release at the proper moment. For this purpose Iemploy a movable clamp upon the carriage operated by a controller slideor shoe Either or bothV ICO IIO

- carriage 50 is reci procated by a lever 54,hinged to the carriage, asat 55, and operated through v a link 56 from a crank 57 on the shaft 58.

95 is a transverse plate carried by the pedestal 53 (or plates 62 62ncarried thereby) and projecting forward therefrom at a slight distanceabove the upper edge of the pedestal to ypermit the tube-sections topass between. The rear faces of plate 95 and pedestal may be inclinedorbeveled, as shown, to guide the forward edge of the tube sectionbetween them.

96 is a clamp extending transversely below the projecting edge ofthe'plate 95 and separated a distance therefrom to permit thetubesection to pass between. Its front edge is immediately adjacent tothe edge of the plate 95. This clamp 96 is pivoted at its rear, as at100, to the plate 95 ,and` is provided Witha controller or arm 97, whichruns on a longitudinal rod 99, extending rearwardly from a bracket'lOlin the front of the machine. The movement of this slide 98 on the rod 99when the carriage 53 is moved forward produces a frictional resistance,which acts to rock the clamp 96 on its pivot 100 and to clamp its edgewith the edge of the plate 95. The ,instant the backward movement of thecarriage 53 begins this frictional resistance acts in the oppositedirection and opens the clamp 96. Thus while the carriage 53 is movingforward the edges of the plate 95 and clamp 96 are clamped together; butat the moment when the carriage 53 starts to move back they areunclamped.

I have shown the controller or arm 97 provided with a shoe 98, runningupon the bar 99. In the drawings this shoe is shown consisting of a'longitudinally-divided tubular sleeve embracing the bar 99, with onehalf carried by the arm 97 and the other half conl nected therewith bypins 102, with springs 103 interposed between the pins and thesleeve-section, thus uniting the sections of the sleeve 98 by a yieldingconnection.

The bottom-formels 6l are carried by the pedestal 53 and consist ofsuction-formers having perforated faces adapted to move apart asthecarriage reciprocates and to break down the end of the paper-tube, whichadheres to their suction-faces, into the desired folds. I

62 621l are cheek-plates or extensions carried by the pedestal 53, oneon each side, to which the movable suction formers are hinged. Insteadof usingform ers composed of independent sections liingedtogether, as inthe p'atentsireferred to, I employ collapsing sections so constructedthat as thesections vary their angular relations one section willcollapse upon the other at the back, each section being moved on atransverse axis at its rear. The suction-former 60 is hinged to theplate 62 at one end on a pivot 104, and in the construction shownconsists of two hollow boxes or sections 63 64, of which. the outer boxor section 64 fits within the side plates 136 136 of the section 63 (seeFig. 7) and is hinged to the end frame 65 through an arm 66, connectedwith the frame 65 by a pivot 67. The sections 63 64 are provided withperforated suction-faces 68 69, and the back 105 of the inner section 63is curved and fits over the curved back 106 of the section 64, so thateither section may move with reference to the other on its respectivepivot 104 or' 67. The lower suction-former 6l is identical inconstruction and arrangement with the suctionformer 60, consisting of aninner section 63, having a perforated face 68 and pivoted ,at 1,04atoithe opposite side cheek 62, and an outer section 64, having aperforated face 69 and hinged at 67, through an arm 66a, to the endframe 65n of the section 63, the curved back 105 of the section 63atting over the curved back 106;l of the section 64a and per-` mittingthe two sections to move with respect to one another on their respectivepivots or axes.

To avoid the use of meansl for independently creating a suction in eachsection, the sections 63 64 and 63a 64, respectively, com- ICO municatewith one another, so that it is neci essaryrto connect thesuction-creating devices with one section only. p tion shown-this isreadily permitted by the feature of the collapsibility of the sectionsat the back, the rear of the front sections 64 64 ltions'of theirsections are varied. Suitable mechanism may be employed for thispurpose, such, e. g., as is shown in the patents of Purvis referred Ato.I have, however, shown a special form of vmechanism for operating thesections, which I shall now describe; but it is to be understood thatthe same `forms no partY of the present invention, as it is thesubject-matter of an application for Letters Patent of Richard AMaxUhlmann, Serial No. 636,564, filed July 22, 1898. These devices are asfollows: 107 is a gear-wheel on the pivot 104 of the end frame 65 of thesection 63. 108 is a gear-wheel carried on a stud 109, journaled in theside. cheek 62 and, carrying an arm 110, on the end of which is a roller111. 112 is a gear-wheel carried by the pivot 67 of the arm 66 of theouter section 64, and 113 is an intermediate gear on the frame 65,between the gears 107 and 112. 114 is a roller on an arm 115, carried bythe end frame 65 of vthe section 63. Similar devices are employed at Inthe construc- I .IIO

